Spinning device



Feb. 14, 395$ c. HATFIELD SPINNING DEVICE Filed June 4, 1946 Fig. 1..

2 Sheets-Sheet 1 INVENTOR.

CORTLAND HATFIELD fine/E Feb. 14, 1950 Filed June 4, 1946 c. HATFIELD2,497,082

SPINNING DEVICE 2 Sheets-Sheet 2 INVENTOR. CORTLAND /7'ATF/E LD 477 A:we

Patented Feb. 14, 1950 UNITED STATES PATENT OFFICE SPINNING DEVICEApplication June 4, 194.6, Serial No. 674,237

2 Claims.

This invention relates to improvements in rayon manufacturing equipmentand more particularly to the spinning heads and funnels commonlyemployed in the cuprammonium cellulose stretch spinning system, asdisclosed, for example, in U. S. Patents Nos. 1,596,086, 1,828,497, etc.

The primary object of this invention is to simplify the construction andassembly of the spinning head and funnel while preserving the efficiencyof the device.

Among its features the invention embodies a spinning head comprising aminimum number of parts which may be assembled without the use ofcement, and a spinning funnel having a frustroconical ring or collarwhich cooperates with a tapered seat in said head to form a fluid tightjoint.

Referring to the accompanying drawings wherein a preferred embodiment ofmy invention is shown:

Fig. 1 is a Side view partly in section of a spinning head and funnelassembled in accordance with the present invention.

Fig. 2 is a bottom plan view of the dome or upper part of the spinninghead.

Fig. 3 is a side view partly in section of the spinning liquiddistributor.

Fig. 4 is a fragmentary side view of a spinning funnel made inaccordance with this invention, and

Fig. 5 is a perspective view of the clamping ring used for holding thefunnel in the head.

Referring to the drawings in detail, the spinning head proper comprisesa dome designated generally I!) and a liquid distributor designatedgenerally H.

The dome l0 comprises a substantially cylindrical body l2 carrying atits upper end a projecting peripheral flange l3 and at its lower end aprojecting peripheral flange I l. The flange I4 is provided at spacedintervals with internally screw-threaded bolt holes l5, the axes ofwhich extend parallel to the axis of the body 12. Extending inwardlyfrom the upper end of the body I2 is a dome-like portion It having arelatively large central opening I! for the reception of a spinnerettemounting I8 carrying a spinnerette 19 through which spinning solution isintroduced into the spinning head. Formed on the lower end of the bodyI2 is a depending collar 20 which serves to locate the parts duringassembly, as will be more fully hereinafter described.

The liquid distributor I I above referred to comprises a base plate 2|having an internally tapered bore forming a seat 22 and in its upperface an annular groove 23. Formed at spaced intervals in the plate nearits periphery are bolt holes 24 which, when the parts are assembled,align with the bolt holes in the flange M of the dome I0. Extendingupwardly from the grooved surface of the base plate 2i is a wall 25, theouter surface of which tapers toward its upper end, while the innersurface is cylindrical and aligns with the smaller diameter of the seat22. Extending outwardly from the wall 25, at its junction with the baseplate 2| and partially overhanging the groove 23, is an annular flange28 which, when the parts are assembled, cooperates with the innersurface of the body 12 in forming a constricted annular passage, asshown in Fig. 1. Opening into the groove 23 from an angular direction isa base 21 which terminates at its opposite end in an internallyscrew-threaded base 28 for the reception of a coagulating liquid supplypipe 29, as depicted in Fig. 1.

In Fig. 4 there is illustrated a conventional spinning funnel 3!! havingformed near its upper end an outstanding annular flange 3!, th outerperipheral surface of which tapers toward its upper end to the samedegree as the seat 22 tapers. The largest diameter of the flange 31 isslightly greater than the largest diameter of the seat 22 so that, whenthe parts are assembled, flange 31 will not wholly enter the bore in thebase plate 2|. A clamping ring 32, as shown in Fig. 5, is provided atspaced intervals with bolt holes 83 which are adapted to align with thebolt holes [5 and 24 for reception of clamping bolts 34. The ring 32 isrecessed at 35 to accommodate the liquid supply pipe 29 shown in Fig. 1.

As illustrated in Fig. 1, the parts are assembled by seating the lowerface of the flange I4 of the dome [0 upon the upper face of the baseplate 2| of the liquid distributor H with the collar projecting into thegroove 23, as shown. This serves to accurately locate the parts, and atthe same time assures a fluid tight joint between the parts. It is ofcourse understood that, in so assembling the parts, the bolt holes [5and 24 are placed in alignment. Having thus fitted the dome l0 andliquid distributor it together, the larger end of the spinning funnel 30is introduced from below into the tapered opening in the base plate 21and up into the cylindrical part of the wall until the conical flange 3!contacts the seat 22 in liquid tight engagement therewith. The clampingring 32 is next slipped over the smaller end of the funnel and soadjusted as to cause the recess to receive supply pipe 29 and the boltholes 33 to align with the bolt holes 34. Bolts 34 are then inserted inthe bolt holes with their threaded ends engaging the internally threadedbolt holes I and turned up to draw the parts together in fluid tightcontact. It will be seen in Fig. 1 that, when the parts are thusassembled, liquid entering through pipe 29 will flow around the grooveand thence upwardly between the outer face of the flange 26 and theinner face of the body [2 with these parts cooperating to form aconstricted annular passage through which the liquid flows upwardly andfinally overflows the upper edge of the wall 25 and thence down alongthe inner surface of wall 25 into the annular space 36 formed by theportion of the funnel extending upwardly beyond the flange 3| and saidinside wall 25 and thence into the spinning funnel 30. It is of courseto be understood that liquid in suflicient volume is supplied throughpipe 29 to keep the spinning funnel completely filled irrespective ofthe volume of liquid discharged from the lower end of the funnel 30.

It is of course to be understood that this device can be used in funnelspinning of any spinning solution, such as cuprammonium cellulose,viscose, casein, cellulose ethers, cellulose esters, etc.

It is furthermore to be understood that the foregoing detaileddescription and drawings are given merely by way of illustration andthat many variations may be made therein without departing from thespirit and scope of my invention.

I claim:

1. In a spinning head and funnel assembly, a liquid distributing membercomprising a base plate having a central opening which tapers upwardly,an annular wall rising from the base plate in alignment with the uppersmaller end of the opening, said base plate having an annular groove inits upper face at the junction of the outer face of the wall and thebase plate and having also a liquid inlet port communicating with thegroove from below, a liquid-flow constricting flange on the annular wallpartially overhanging the groove, a dome removably seated on the upperface of the base plate in spaced relation to the annular wall, aspinning funnel insertable through the tapered opening in the base platesaid funnel having a relatively narrow frustro-conical flange disposed ashort distance below its top edge and extending peripherally about andradially from said funnel and having a tapered peripheral surfacecorresponding to the taper of the opening in the base plate, an annularmember bearing against the bottom surface of said flange and pressureexerting means cooperating with said dome, said base plate and saidannular member to force said member against the bottom surface of saidflange and said flange into its seat in said tapered opening and toretain said dome, said base plate, said funnel, and said annular memberin assembled relation.

2. In a spinning head and funnel assembly, a liquid distributing membercomprising a base plate having a central opening which tapers upwardly,an annular wall rising from the base plate in alignment with the uppersmaller end of the opening, said base plate having an annular groove inits upper face at the junction of the outer face of the wall and thebase plate and also having a liquid inlet port communicating with thegroove from below, a liquid-flow constricting flange on the annular wallpartially overhanging the groove, a dome removably seated on the upperface of the base plate in spaced relation to the annular wall, aspinning funnel insertable through the tapered opening in the base platesaid funnel having a relatively narrow frustro-conical flange disposed ashort distance below its top edge and extending peripherally about andradially from said funnel and having a tapered peripheral surfacecorresponding to the taper of the opening in the base plate, an annularmember bearing against the bottom surface of said flange, pressureexerting means cooperating with said dome, said base plate, and saidannular member to force said member against the bottom surface of saidflange and said flange into its seat and to retain said dome, said baseplate, said funnel and said annular member in assembled relation, theoutside surface of said funnel above said flange being spaced from theinside surface of said annular wall rising from said base plate to forman annular receiving channel for liquid overflowing the top of saidannular wall in its passage to the interior of said funnel.

CORTLAND HATFIELD.

REFERENCES CITED The following references are of record in the flle ofthis patent:

UNITED STATES PATENTS Number Name Date 1,619,769 Schubert Mar. 1, 19271,997,930 Hofmann Apr. 16, 1935 2,193,316 Feikes Mar. 12, 1940 2,246,990Wuppermann June 24, 1941 FOREIGN PATENTS Number Country Date 478,928Germany Apr. 14, 1926

